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How does the QR code scanning module read the barcode

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[Abstract]:
Now we go to shopping malls, go to restaurants and even participate in many activities, all we need to scan the two-dimensional code can be solved, and these solutions are through the seemingly simple two-dimensional code can be perfectly solved, from these scenes we can see that the two-dimensional code module has become an important tool in our lives. I believe that with the continuous development and innovation of technology, the two-dimensional code module will bring us greater help in the future.

Now most applications will use the two-dimensional code, because the two-dimensional code is more convenient and fast, and unconsciously, the application of two-dimensional code has occupied all aspects of our lives. This article is mainly to explain how the scanning module reads the bar code, and the technology and difficulties involved in this process.

barcode module

 

The two-dimensional code is a matrix code composed of black and white rectangular patterns, which combines different information through different arrangements. Compared with the traditional one-dimensional code, the two-dimensional code has greater capacity, stronger error correction ability, and better security. Most importantly, QR codes can represent many types of data, such as text, images, web addresses, and so on.

Two-dimensional code module looks like a simple small device is how to achieve fast and accurate recognition of bar codes? This is to start from its principle and characteristics, the module is composed of camera, lighting source, processor and decoding algorithm. When the device scans the two-dimensional code, the camera of the module will capture the image of the barcode, and then the processor processes the image to extract the information in the two-dimensional code. Then the decoding algorithm decodes the information and converts it into identifiable data. Finally, the final result is obtained according to the decoding result.

In the process of scanning QR codes, there are several key technical essentials and challenges to overcome:
1) Image processing technology: In the process of scanning, the Angle, distance and light are different, and the images captured by the camera may have certain problems such as blur and tilt.
In view of these possible problems, advanced image processing technology is needed to preprocess images to improve the accuracy and speed of recognition.

2) Decoding algorithm: The decoding process of two-dimensional code involves complex mathematical operations and coding rules.
In order to ensure fast and accurate decoding, the R&D team needs to keep abreast of market dynamics and insist on developing new and efficient algorithms.

3) Security issues: security issues are the core competitiveness of two-dimensional code module and the most respected performance of two-dimensional code module, but the power of science and technology is unlimited, and security risks are always present.
For example, a malicious attacker may commit fraud or spread malware by modifying the content or structure of a QR code.
Therefore, when using the module that scans the two-dimensional code, certain security measures need to be taken, such as verifying the source and integrity of the two-dimensional code.

Now we go to shopping malls, go to restaurants and even participate in many activities, all we need to scan the two-dimensional code can be solved, and these solutions are through the seemingly simple two-dimensional code can be perfectly solved, from these scenes we can see that the two-dimensional code module has become an important tool in our lives. I believe that with the continuous development and innovation of technology, the two-dimensional code module will bring us greater help in the future.